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/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
import java.util.ArrayList;
import com.sun.star.lang.IndexOutOfBoundsException;
/**
Base class for all tree nodes.
*/
abstract class AccessibleTreeNode
{
/// The parent node. It is null for the root node.
private AccessibleTreeNode maParent;
/// The object to be displayed.
private final Object maDisplayObject;
public AccessibleTreeNode (Object aDisplayObject, AccessibleTreeNode aParent)
{
maDisplayObject = aDisplayObject;
maParent = aParent;
}
public void update ()
{
// Empty
}
public AccessibleTreeNode getParent ()
{
return maParent;
}
public int getChildCount ()
{
return 0;
}
public AccessibleTreeNode getChild (int nIndex)
throws IndexOutOfBoundsException
{
throw new IndexOutOfBoundsException();
}
public AccessibleTreeNode getChildNoCreate (int nIndex)
throws IndexOutOfBoundsException
{
throw new IndexOutOfBoundsException();
}
public boolean removeChild (int nIndex)
throws IndexOutOfBoundsException
{
throw new IndexOutOfBoundsException();
}
public abstract int indexOf (AccessibleTreeNode aNode);
/** Create a path to this node by first asking the parent for its path
and then appending this object.
*/
public void createPath (java.util.List<AccessibleTreeNode> aPath)
{
if (maParent != null)
maParent.createPath (aPath);
aPath.add (this);
}
public Object[] createPath ()
{
ArrayList<AccessibleTreeNode> aPath = new ArrayList<AccessibleTreeNode> (1);
createPath (aPath);
return aPath.toArray();
}
public boolean isLeaf()
{
return true;
}
@Override
public String toString()
{
return maDisplayObject.toString();
}
/** get names of supported actions */
public String[] getActions ()
{
return new String[] {};
}
/** perform action */
public void performAction (int nIndex)
{
}
}
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